visualboyadvance-m/fex/7z_C/7zExtract.h

50 lines
1.4 KiB
C

/* 7zExtract.h -- Extracting from 7z archive
2008-11-23 : Igor Pavlov : Public domain */
#ifndef __7Z_EXTRACT_H
#define __7Z_EXTRACT_H
#include "7zIn.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
SzExtract extracts file from archive
*outBuffer must be 0 before first call for each new archive.
Extracting cache:
If you need to decompress more than one file, you can send
these values from previous call:
*blockIndex,
*outBuffer,
*outBufferSize
You can consider "*outBuffer" as cache of solid block. If your archive is solid,
it will increase decompression speed.
If you use external function, you can declare these 3 cache variables
(blockIndex, outBuffer, outBufferSize) as static in that external function.
Free *outBuffer and set *outBuffer to 0, if you want to flush cache.
*/
SRes SzAr_Extract(
const CSzArEx *db,
ILookInStream *inStream,
UInt32 fileIndex, /* index of file */
UInt32 *blockIndex, /* index of solid block */
Byte **outBuffer, /* pointer to pointer to output buffer (allocated with allocMain) */
size_t *outBufferSize, /* buffer size for output buffer */
size_t *offset, /* offset of stream for required file in *outBuffer */
size_t *outSizeProcessed, /* size of file in *outBuffer */
ISzAlloc *allocMain,
ISzAlloc *allocTemp);
#ifdef __cplusplus
}
#endif
#endif